spicymery spicymery

03-03-2020
Chemistry

contestada

How much heat is released when a 20g block of lead cools from 150°C to 120°C

How much heat is released when a 20g block of lead cools from 150C to 120C class=

Respuesta :

kinyonethan1 kinyonethan1

03-03-2020

Answer:

96 Joules of heat released.

Explanation:

q=mc∆t

q=(20)(.16)(-30)

q=-96

Q negative means heat is released.

Answer Link

Otras preguntas

Compare the causes and effects of the Great Leap Forward and the Cultural Revolution in China.

Fill two of the pools with water. Each pool will be filled to a depth of 5 feet. The other necessary dimensions are given below. • The isosceles triangle pool:

What two types of cells in the human body that can divide endlessly?

Read the following sentence. The cars passing by are filled with commuters. Identify the present participle in the sentence. A. by B. are C. passing D. filled

is 1/4 greater than 1/8

What assumption is made with supply-side economics?

Select all that apply. 2. (3 pt) How did the protests change during the 1960s? a. Women and Mexican Americans joined other groups to protest inequality. b. Co

Which sentence has the correct subject-verb agreement? Lightning bolts flash across the sky. Lightning bolts flashes across the sky.

Solve the equation. x^2 = 160 A [tex] \frac{+}{} [/tex] 16 [tex]{ \sqrt{10} } [/tex] B [tex] \frac{+}{} 4 \sqrt{10} [/tex] C 14 D -14, 14

. Anthony has twice as much money as Daniel. Mya has 6 more dollars than Daniel. Altogether they have $102. How much money does Mya have?